How does looking at individual files help to confirm that things are working? "Hello, thanks for calling tech support. How can I help you?" "I uploaded a file

How does looking at individual files help to confirm that things are working? "Hello, thanks for calling tech support. How can I help you?" "I uploaded a file but it's not showing up in my account." "What was the name of the file?" "Cat.jpg" "Ok, give me a moment to look at the logs..." These are the kinds of questions that come up all the time in supporting a SaaS product with non-technical and semi-technical users. Debugging is not something only programmers do. Oftentimes bugs are found only after a client interacts with support. Oh, another thing: deletes. At my last company I can't tell you how many times customers wanted us to restore deleted data. After many frustrating support experiences we implemented soft deletes for most objects. Hard deletes required written confirmation from the user and 48 hours to purge it from all backups.